Is shimmering a noun?
Yes, the word 'shimmering' is a gerund, the present participle of the verb to shimmer that functions as a noun. The present participle of the verb also functions as an adjective.Examples:We could see the shimmering of the lake in the moonlight. (noun)The children's eyes were shimmering with delight. (verb)Shimmering glass skyscrapers dominate the skyline. (adjective)